It would take a while for me to understand how this new UCL format will play out especially the league phase. I have become very familiar with the old format so much that this new changes seem very strange.
Very strange format indeed, I was very much surprised to find champions league football been played thinking most leagues are on holiday and all that...I wonder what's going on with this competition now 
As we speak am just using YouTube to try understand the new format and catch on...hope our favourite big teams are seeded to avoid going through the whole process
I will watch some YouTube video later to better understand it. The reason why I find it a bit confusing apart from the explanation about league phase is because we have become accustom to how the UCL works for over a decade now. I'm sure not everyone is well adjusted with the changes yet. I came to the thread only to see some people talking about qualifying stages and I was just outright confused. Afaik, as long as our favorite big teams finished well in their domestic leagues, they should be good to go for league phase seeding.